Improvement in self-extinguishing stoves



a Shets-Sheet 2 W. P. OONDON. Self-Extinguishing Stove.

No. 200,697. Patented Feb. 26,1878.

N.PEIERS. PHOTO-LITNOGRAPHER, WASHINGTON. D C,

3 Sheets-Sheet 3'.

W. F.0ONDON. Self-Extinguishing Stove.

Patented Feb. 26,1878v N, PETERS. PHQTO-LITHOGRAPHER. WASHINGTONv D. C.

UNITED. TATESJ ENT QFFICEQ WILLIAM F. coNDoiv, on ZILWAUKIE, MICHIGAN, ASSIGNOR OF ONE-HALF HIS RIGHT TO ERNST WETZEL,.WILLIAM E. GARDNER, DAVID OREASER, AND E.--J. CLARK, OF SAME PLACE.

IMPROVEMENT IN S ELF- EXTINGUISHI'NG STOVES.

Specification formingpart of Letters Patent No. 200,697, dated February 26, 71878; application filed May 24,1877.

To all whom it may concern:

Be it known that I, WILLIAM F. OoNnoN, of Zilwaukie, in the county of Saginaw and State of Michigan, have invented certain new and useful Improvements in Self-Extinguishing Stoves; and I do herebydeclare that the fol-i lowing. is a full, clear, and exact description thereof, which will enable others skilled in the art to whichcit appertains to make and use-the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

In the accompanying drawings, Figure luis a vertical section of my. selfextinguishing stove for railroad-cars. Fig. 2 is a horizontal section of the sameon the line 50-00, Fig. 1.

Fig. 3 represents a detached-view of part of the front of the stove, including the front door and itscut-ofi slide. Fig. 4 is a section show;

ing the wood-grate in place or substituted for the coalgrate, which, with the coal-fire pot, has been removed. Fig. 5 is a detached view of top of the inner cover with itscross-bars, Fig. 6 is a detached top view of the coal-grate. Fig. 7 represents ,adetached view of part of the ash-rake,showing the form of the scrapers attached to a ring of .metal forming the head of the rake. Fig. Sis avertical section of the lower part of the stove, showing the relation of thesalt-chamber, water-tank, and otherparts. Fig. 9 is a detached view of a quadrantal section or part of the arch or floor below the grate, the lower part of the figure showing a plan and the upper'part an edge view thereof. Fig. 10 is a-detached view of a quadrantal section or part of the grate, the

conical floor, J, which is cast in four sections,

, as indicated by four radial dotted lines denoting sections in said floor. These quadrantal sections fit loosely in place, and the top or arch of the floor, or the sections thereof, rest upon the top of the central pipe or tube M,

Figs. 1 and .4, which surrounds the pipe K, Fig. 1, hereinafter explained. By this con struction the floor J or the sections thereof will tumble when the stove is overturned, and

thus allow water from the tank R and salt from the chamber U to be precipitated upon the fire in order to extinguish the same. This floor has one quadrantal section, J, longer than the others, and extending down into the ash-pan I, as seen in Fig.4. The floorbeing very .high in. the center, the ashes falling through the grate T slide downward on the floor, toward the outer edge thereof; anda rake or loosely-fitting ring, H, provided with;

scrapers 1', (best shown in Fig. 7,) is arranged to be revolved, and thus the scrapers i will bring the ashes round till they fall into the ash-pan I. This rake or ring is usually shaken 'or revolved byineans of a removable handle, .to be inserted into a hole in the ring; and one or more of the scrapers upon the ring H' may be cast separate from the ring and hinged thereto, as shownat i, so as to be turned or folded up to serve as a handle for revolving the rake, and then turned down again in place 7 like the other scrapers.

In the lowerpart of thestove is a'watertank, R, Fig. 8, havingseveral pipes, K and K passing up through pipes M and M of the. salt-chamber, hereinafterto be described; These pipes of the water-tank are intended for discharging water upon the fire when the stove is overturned.

The tank R is to be filled through pipe S,

Fig. 1, which may be provided with a glass index to show the height of the water; and the tank should'have a faucet for drawing 01f the water in cold weather to 'prevent freezing when the fire is extinguished.

Above the water-tank, and yet below the fire, is a salt-chamber, U, extending over the whole area of the lower part of the stove. This chamber has a central pipe, M, loosely surrounding the pipe K of the watertank, and also several other pipes, M, which surround the pipe K of the water-tank, thus preventing the water and salt from mixing until both are discharged or thrown upon the fire by overturning the stove.

In Fig. 8 the irregular shading of the saltchamber U indicates dry salt filling the chamber. Thus this salt remains dry until the stove is overturned, when the salt falls upon the fire, which is at the same time flooded by water from the tank It flowing through the pipes K and K, as above explained.

The bottom of the stove is provided with a pipe, V, extending above the salt-chamber, and left open in order to let off the steam and smoke when the stove is overturned, and the regular smoke-pipe is thus closed by its outoff, as will be explained.

My stove is provided witha double top or two covers, B and C, Fig. 1. The cover B is hinged to the top of the cylinder A, and when closed may be secured by the usual wire key put into the catch 1), Fig. 4. The inner cover 0 is shown detached in Fig. 5. The ends of the cross-bars G project beyond the sides of the cylinder A when the cover is in place, and thus form lugs to receive the bolts W, Fig. 1, which pass down through lugs Y and fasten the stove to the floor in the usual manner.

The smoke-pipe, the front door, and the draft at the ash-pan are all provided with self-closing slides or eut-offs,which are held loosely in place by guide-rods or check-wires, so that said slides will move by their own weight when the stove is overturned, and thus close the smoke-pipe, the draft of the front door and of the ash-pan, respectively.

A small chamber, E, is made on the inside of the stove and in front of the smokepipe D, Fig. 4, and provided with a round disk or shut-off, 0, having a hole, d, which is directly opposite the flue or pipe D when the stove is in the upright position. This shut-off is held loosely by means of guide-rods g, and will move by its own weight to the right or left when the stove falls over, and thus close the smoke-pipe, as indicated in dotted lines, Fig. 1.

The front door is shown at F, Fig. 3,which is a detached view of part of the front of the stove, the main portion of cylinder A being broken away. The self closin g slide F is loosely held in place on the door by means of guide-rods 9, so as to be capable of moving either laterally or upward in case the stove falls over, and thus (sliding by its own weight) close the draft through the door, as indicated by dotted lines and upward motion in Fig. 3. In like manner theash-pan I, or the draft therein, has a slide, G, loosely held by guiderods 9, and capable of sliding by its own weight as the stove is overturned, motion of the slide in one direction being indicated in dotted lines.

All the doors of the stove, including those for cleaning, should be fastened by the commonkeys or wire rings used for such purposes.

In order to use wood, the coal-grate T and fire pot P are removed and the woodgrate O substituted. This grate is made in four quadrantal sections, as shown at 0, Figs. 10 and 4, the radial bars of the same being flat and thin, while the bars of the coal-grate are broader, as seen in Figs. 6 and 7.

Having described my invention, what I claim 1s-- 1. The sectional or tumbling floor J, in combination with a water-tank below the same, substantially in the manner and for the purposes set forth.

2. The steep arched floor J, in combination with the ring H, having scrapers thereon, substantially as set forth.

3. The water-tank 1%, provided with several pipes, K, in combination with the salt-chamber,

having pipes M, substantially as and for the purposes set forth.

4. The shut-01f or slide F, in combination with the stove door, said slide being held loosely in place by means of the guide-rods g, so that the slide or shut-01f will close by means of its own gravity when the stove is overturned.

5. In combination with the smoke-pipe d, the shut-off e, held loosely in place by guiderods g, so-that said slide, moving by its own gravity, will close the flue whenever the stove falls over, no matter in which direction it falls,

substantially as set forth.

6. The sliding damper G, in combination with the ash-pan and the draft-openings therein, said slide being held loosely in place by means of guide-rods g, and arranged, as de-' scribed, so as to close by its own weight whenever the stove is overturned in any direction, substantially as set forth.

In testimony that I claim the foregoing as my own I afiix my signature in presence of two witnesses.

WILLIAM F. OONDON.

Witnesses:

DANIEL BREED, E. G. WEAVER. 

